Reaction rates and equilibrium Flashcards
what is a homogeneous catalyst?
when the catalyst has the same physical state as the reactants
what is a heterogenous catalyst?
when the catalyst has a different physical state from the reactants
what happens to Boltzmann when temperature is increased and why?
shifts to the right and peak lowers
because more molecules will now have a energy level greater than the activation energy
greater frequency of collisions
what happens to Boltzmann when catalyst is added?
catalyst reduces the activation energy
more particles have an energy greater than or equal to the activation energy
what is the area under the Boltzmann curve?
the total number of molecules
what happens in an equilibrium system?
- rate of forward reaction is equal to rate of backward reaction
- concentration of reactants and products do not change
what happens if the Kc value > 1?
shift towards products
what happens if the Kc value < 1?
shift towards reactants
what happens if the Kc value = 1?
equal
